Doorlatch mechanism



July 11, 1933. w c DEVEREAU'X 1,917,438

DOORLATCH MECHANISM File'd Oct. 10, 1932 gmwwn 71 27! in??? C lezfereaux hicle door of the door and ha Patented July s 11, 1933 WILLIAM G. DEVEREAUX,

roFFicE or DETROIT, -MIGI-IIGAN DOORLATCH MECHANISM Application filed October 10,

This invention relates generally to door latch constructions and refers more particularly to the outside handlehub or rollback structure thereof. 3

One of the essential objects of the invention is to provide a one piece rollback .with means for taking up play between the rollback and handle stem and for normally holding the stem and handle in a predetermined positionwhen the parts are installed in a vehcile door.

Another object is'to provide a structure which comprises fewer parts and can be more economically manufactured than sectional rollback assemblies.

Other objects, advantages and novel details of construction will be made more apparent as this description proceeds, especially when considered in connection with the accompanying drawing, wherein:

Figure 1 is a fragmentary elevation-of a vehicle door with latch mechanism embodying my invention applied thereto; 7

Figure 2 is a sectional view taken on the line 2-2 of Figure 1;

Figure 3 is an e larged detail view of the rollback; I

Figure 4 is an edge elevation of the rollback illustrated in Figure 3 Figure 5 is a detail view of the tension spring;

Figure 6 is an edge elevation of illustrated in Figure 5. 9

Referring now to the drawing, 1 is a ve- 2 is a latch case plate secured to the inner side of the door and-having a lateral flange 3 at its forward edge secured to the free edge of the door; 4 is a latchbolt extending through an opening in the flange 3 for engagement with a suitable keeper (not shown) and having a shank 5 slidably mounted on the case plate 2, and 6 is a spring anchored on the case plate and having-an arm 7' engaging the shoulder 8 of the shank 5 and normally holding the bolt 4 in projected position. 9 is a cover plate arranged in spaced'relation to the case plat-e 2 and rigidly secured thereto and to the flange 3, and lO'is a handle operable from the outer side ving a stem 11 ofsubstanthe spring portions 16 and 17 and 1932. Serial No. 637,175."

tially square cross section disposed substantially parallel to the lateral flange 3 of the case plate and extending through aligned v circular openings 12 and 13 respectively in the case plate 2 and cover plate-9. V

In the present instance I have mounted a one piece rollback 14 of special design upon the handle stem 11 for effecting a retraction of the bolt 4 from the outer side of the door and have provided a tension spring 15 for 69 taking up play between the rollback 14 and stem 11 so that the latter will be prevented from rattling and the handle 10 will be held in the proper horizontal position upon the outer side of the door. As shown, the rollback 14 comprises a relatively thick plate having arm a laterally projecting circular hub portion 18. Preferably the rollback is located betweenthe case plate 2 and a cover plate 9 with the hub portion 18 in the circular opening 12 in the caseplate and the arm portion 16 between the lateral flange 3 and a shoulder 19 of the boltshan'k 5. The other arm portion 17 extendsrearwardly below the shoulder 19 and isadapted to be engagedin the usual way by a suitable dogging member (not shown) when it is desired to render the outside handle 10 inoperative from the inside ofthe door. ThetensLionspring 15 comprises an annulus edge with a web 21 and provided at its other edge with a peripheral flange 22. Preferably the annulus is located in the circularopening 13 in the cover plate 9 with the web 20 substantially flush with the outer face ofthe cover plate 9 and with the flange 22 between the'cover plate 9' and the rollback 14. As. shown, theweb 21 has a substantially squareshaped opening 23 receiving the stem 11 and is provided at the four edges of the opening with lugs 24 that incline inwardly and yieldmgly engage the four sides of the stem. The

flange 22 is flat against the adjacent side ofv the'rollback 14 and'the combined width of the two is substantially equal to the distance between the opposed faces of the cover plate 9 and case plate 2. Preferably the flange 22 is provided atsubstantially diametrically opposite points thereof with laterally extending lugs 25 and 26 respectively that fit in suit 20 provided at one 80 able slots 27 and 28 respectively in the rollback 14 so that a separable but firm driving connection is provided between the spring 15 and the rollback 14.

Thus when the parts are spring 15 will move with the rollback 14. and in doing so will take up any play between the rollback and stem 11. Moreover the construction is such that when the rollback arm 16 is held against the case plate flange 3 by the spring pressed shoulder 19 the stem 11 will be prevented from rattling and the handle 10 will be yieldingly held in proper horizontal position upon the outer side of the door.

What I claim as myinvention is:

a 1. In a door latch,-a handle stem, a one piece rollback on the stem, and means for taking up play between the rollback and stem including means rotatable in a cover plate for therollback and having oppositely extending portions, one of said portions having an opening receiving the stem and lugs in the edges of the opening under tension. and pressing against the stem, and the other of said portions engaging the rollback andhaving lugs interlocked therewith.

2. In a door latch, a handle stem, a one piece rollback on the stem, and means for taking up play between the rollback and stem including a member of yieldable material rotatable in a cover plate for the rollback and having a web and a peripheralflange, the web having an opening receiving the stem and lugs under tension engaging the stem, and the flange bearing against one side of the rollback and having laterally projecting lugs interlocked therewith.

3. In a door latch, a pair of substantially parallel plates, a rollback between said plates in spaced relation to one of them and having a laterally projecting hub mounted to turn in the other, a handle stem extending through. the hub, and means for taking up play between the rollback and stem including a member of yieldable material mounted to turn in the other of saidplates, having portions pressing against said stem and having other portions connected to the rollback.

.{LIn a door latch, a case plate, a cover plate substantially parallel to the case plate, a rollback between said plates and having a hub rotatably mounted in one of them, a handle stem extending through said hub, and

means for taking up play betweenthe rolls back and stem, including a member of yielde able material rotatably mounted in the other.

of said. plat-es, having portions pressing against said stem and having other portions connected 'to the rollback. I

y 5. In a door latch, a case plate, a cover plate substantially parallel to the case plate, a rollback between said plates and having a hub rotatably mounted in one of them, a handle stem extending through said hub, and means assembled the for taking up play between the rollback and stem, including a member of yieldable material rotatably mounted in the other of said plates and having oppositely extending portions, one of said portions having an opening receiving the stem and parts under tension pressing against the stem, and-the other of said portions being disposed at one side of the rollback and having parts interlocked therewith. p v I 6, In a door latch, a pair of substantially parallel plates having aligned openings therein, a handle stem of substantially square cross section extending through said aligned openings, and a rotary support for said stem in saidopenings including two interlocked members movable between said plates .and having laterally projecting portions journaled in said aligned openings, one of said members being a rollback an d having an arm for engagement with the shank of a latch bolt, and the other of said members terminating short'oi the armand having yieldable means pressing against said stem and taking up play between the rollback and ste 7. In a door latch, a pair substantially parallel plates having aligned openings therein ,a bandle'stem of substantially square cross section extending through said aligned openinns, and a rotary support for said stem in said openings including two members movable between said plates and having complementary portions'iournaled in said aligned openings, one of said members being a one piece rollback and having an arm for engagement' with a shank of a latch bolt, and the other of said members being non-rotative ly connected to the rollback and havinglugs of spring metal. pressing against opposite sides of the stem whereby play is taken up between the stem and rollback; r

8. In a door latch, a pair of substantially parallel. plates having aligned openings therein, a handle stem extending through said aligned openings, and a rotary support for said stem in said openings including two members movable between said plates and having complementary portions iournaled in said aligned openings. one of said members being a rollback and being more than twice as thick as the other. and the other of said members being formed from spring metal and having-an area less than that of the rollback,

for said stem in'said openings, including two members movable between said plates and having. complementary portions iournaled in said ahgned opemngs, one of said members whereby play is taken up being a rollback and having notches therein at substantially diametrically oppositepoints thereof, and the other of said members having laterally projecting lugs engaging said notches and having lugs of yieldable material pressing against said stem whereby play is taken up between the stem and rollback.

10. In a door latch, a pair of substantially parallel plates having aligned openings therein, a handle stem of substantially square cross section extending through said aligned openings, and a rotary support for said stem in said openings including two members having complementary portions journaled in said aligned openings, one of said members being a rollback and having an arm movable between said plates for engagement with a shank of a latch bolt, and the other or" said members being non-rotatively connected to the rollback and having yieldable means pressing against opposite sides of the stem between the stem and rollback.

11. In a door latch, a pair of substantially parallel plates having aligned openings therein, a handle stem extending through said aligned openings, and a rotary support for said stem in said openings including two members having complementary p portions journaled in said aligned openings, one of said members being more than twice as thick as the other and having an arm movable between said plates for engagement with a shank of a latch bolt, and the other of said members being formed from light gauge spring'metal and having an area less than that of the first mentioned member, said other member being non-rotatively connected to the first mentioned member and having yieldable means pressing against the stem whereby play is taken up between the stem and first mentioned member. I

12. In adoor latch, a pair of substantially parallel plates having aligned openings there- WVILLIAM C. DEVEREAUX.

whereby play is 7 

